Dustproof bearing



N. N, WHITE AND N1. B. MORGAN..

' DusPN'ooF BEARING.

APPLICATION FILED JUNEZS, 1919. Y

Patented Aug. 95, H2L

f. A J6 A ROBLIN H. WHITE AND MATHEW 4IB. IVIIORGAN, OF CLEVELAND HEIGHTS, OHIO,

ASSIGNORS TO THE CLEVELAND TRACTOR COMPANY, OF E'UCLID, OHIO, A COR-` EORATION OF OMD.

nusrrnoor BEARING.

To all whom it may concern:

Be it known that we, RLLIN H. WHITE and MATHEW B. MORGAN, citizens of the United States, and residents, respectively, of Cleveland Heights, in the county of Guyahoga and State of Ohio, and Cleveland Heights, in the' county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Dustproof Bearings, of which the following is a full, clear,

l and exact description.

f mote froml the bearings of any consequence in respect to the present invention. A

The 1nvent1on is particularly useful on tracks or other machines which are used under conditions where there is a lot of dust to contend with. -The invention is shown in `connection with one of the track wheels of a track laying tractor. l

The invention consists in the vconstruction. and' combination of parts shown in the drawings and hereinafter described and pointed out definitely in the appended claims.

In the drawings, Flgure l is an en-d view of the preferred embodiment of the invention, and Fig. 2 is a front elevation, thev upper half being in radial section. Fig. 3 is a detached planl view of locking member 55. v

Referring to the parts by reference characters, 10 represents the nonrotating shaft, and 20 a wheel which loosely embraces and is rotatably, supported thereby. Between these two parts there are antifriction bearings of familiar form, one in each end of".

antifrictlon,

the wheel. The t articularv bearings shown are t e` variety known in the trade as Timken roller bearings; but almost any other annular `antifriction bearing could be substituted. As shown, each of these bearingsconsists lof an inner bearing ring 25 which embraces and is tted on the shaft; an outer bearing ring 26 which is fitted within a coaxial cylindrical hole in the end of `the hub of the wheel; and a plurality of rollers 27 which are interposed between the Specification of Letters Patent.v Patented Aug. 9, 1921. Appncation :ned June 23, i919. 'serial No. 306,120.

oppositely inclined opposed faces of these L:

two bearing rings. rings engage at their inner ends with shoulders 23 within the wheel, and thereby their positions with respect to said wheel are fixed. The positions of the inner bearing rings are fixed by means of two collars 30 which are secured upon the shaft in engagement respectively with the outer ends of these inner bearing rin s. The one or the other of these collars 30, preferably both), is adjustable, and this adjustability is due to the fact that the collar screws onto the shaft. The bearings as described are well known and are' typical of the bearings to which the present .invention is applicable forthe purpose of excluding mud and dust therefrom.

. There are two annular packing disks 35 preferably made of leather, and secured respectivelyI to opposite ends of thel wheel. These packing disks are sechred near their outer peripheries to the wheel by being clamped /between two washers 36, 37, h means of screw bolts 38 which pass throug these washers and through the packing ring and screw into the wheel. rlhe otherwise free inner part of each packing disk extends toward the axis of the shaft between the The outside bearing l adjacent annular bearing and the inner end of the adjacent collar 30'; and is .springpressed into intimate contact with the inner end face of that collar. This spring 4:0 as shown is a spiral spring which surrounds the shaft and is tted, into the end of the order to distribute the pressure of the spring. The action of the spring is to press this acking disk tightly against the -mner end aceof the adjacent collar. The end faces of the collars are enlarged so as to afford wide bearing surfaces forthe packing ,disks by means ofna ange 32 formed on the Iainner end of each collar.

' ln order to supply lubricant 4tothe so rotected bearings within thewheel an oil uct 13 is formed through vthe shaft from one end,

thereof, and at its inner end extends radially outward through the shaft,'and is in communication with the central chamber within the wheel between the two antifriction bearings. Uil or grease may be forced into this annular chamber through this oilduct.

The maintenance of the collars 30 in the adjusted positions is necessary; and likewise it is necessary to provide means which will ,permit of their adjustment. `To effect these results', especially when the invention is employed in connection with the track laying tractor, the following construction is provided. near its ends in boxes 50, each of which rests upon one of the spaced apart flanges 52 of the track frame of a track laying tractor. An inverted U-bolt 53 embraces each box and goes down through holes in said flange, and the boxv is clamped down upon the flange whenl the nuts 54 are tightened up in the lowerv end of said U-bolts. Between each block and the supporting Bange 52 is a plate 55 havin slots through which the U-bolts pass. h bent upward in the form of an internally serrated arch 57, the sides of which go up on opposite sides of the shaft. Each collar 30 has a longitudinally serrated rear end 30@L with which the serrated innerl surface of the arch 57 may engage.

lln order to be able to turn a collar 3() for v adjustment purposes the U-bolt nuts must be loosened and this plate 55 moved outward so as to carry the serratedarch out of engagement with the serrated end of the collar. When the collar has been adjusted this plate 1s movedinward to again cause the serrated .arch thereof to engage the serratedend of the collar and the U-bolt is tightened. f

Having l l.' The combination with a shaft, a wheel rotatably vmounted thereon, a collar on the described our invention,l we

rllhe shaft 10 is non-rotatably fixedl e inner end of this plate is anexos? shaft afiljacent an end of the wheel, a flexible packing disk which is fixed near its periphery to the end of the wheel and which is in sliding contact with the end face of said collar, and spring means for` maintaining the contact of said parts. l

2. rlhe combination with a shaft, a wheel rotatably mounted thereon, and antifriction "disks,-each' of which is clamped near its outer periphery to the end of the wheel and .is in Contact with the inner end face of the adjacent' collar, and spring means in the wheel actingto press said packing ring into intimate contact with said collar. i

t. rlhe combination with a shaft, a whee rotatablyZ mounted thereon, and antifriction bearings interposed between said wheeland shaft, of collars secured tothe shaft adjacent the'ends of the wheel, and packing rings each packing ring being clamped near itsv outer periphery to the end of the wheelandfbeing in contact with the inner end vface of the adjacent collar, a coil spring'within the wheel surrounding the shaft and compressed between a part of the wheel and said packing ring whereby the latter is pressed a ainst the j inner end face of the associated col ar.

lln ,testimony whereof, we hereuntol axv our signatures.

RULLllN H. WHITE. MAJFMEW B. 

